I think at the very least it will be something like this:
NYK: Wallace, Thornton, Smart, Olynyk/Sully, 2016 Brooklyn 1st, 2015 Clips Pick
Bos: Melo, Dalembert
I would definitely consider this package. THough I LOVE Smart, if we keep Rondo he is more of an asset to us than a player. We'd also lose Olynyk or Sully and probably a pretty good pick in 2016 and a later 2015 1st rounder, but it'd be worth it. Dalembert would also be a good 1 year Center for us until we could try and lure a better C here next year.
I think New York would accept this package because they'd have really good prospects with Smart, Hardaway Jr., and Olynyk with the chance of getting a good Center or wing in the draft.
Of course, many, many things have to go right for Melo to be traded. Both Melo AND Phil have to like the offer, and Melo has to be willing to waive his no-trade clause.